#geomars

[scourgefrontiers]

this is going to activate a certain group of my followers

(their names are rj, vladimir, and geomar, and they are indeed ocs i promise)

i wanted to use them for style practice and wowie. i kinda dig it

[oneyou]

[BTS] Fort & Peat | Geomar ♡˚. —2023.04.06 . .🗓

🔎 Twitter Search 「 GEOMARxFortPeat 」

—Fort Thitipong— •Instagram @ fortfts •Twitter @ fort_fts

—Peat Wasuthorn— •Instagram @ peat.wst •Twitter @ peatwasu

[my-life-fm]

GEOMAR Helmholtz-Zentrum in Kiel möchte Seegras retten

https://mediandr-a.akamaihd.net/progressive/2025/0301/TV-20250301-1228-5200.1080.mp4 Seegras ist ein wichtiger Lebensraum für viele Tier- und Pflanzenarten und speichert außerdem CO2. Leider sind schon viele Bestände davon verschwunden. 01.03.2025 – Schleswig-Holstein Magazin – NDR

[ecopressblog]

4. Mai 2023 ist Erdüberlastungstag in Deutschland Fehmarn, 4. Mai 2023. Der #Erdüberlastungstag, markiert den Zeitpunkt im Jahr, bis zu dem der Mensch so viel von der Erde beansprucht hat, wie alle Ökosysteme im gesamten Jahr erneuern können. Für die Menschen in Deutschland ist dies der 4. Mai. Ab jetzt leben wir auf Pump, also auf Kosten zukünftiger Generationen und auf Kosten der Umwelt. Errechnet wird dieser symbolische Tag jährlich von Global Footprint Network und greift dabei auf wissenschaftliche und wirtschaftliche Daten der Vereinten Nationen zurück. Im Vergleich aller Länder weltweit liegt Deutschland im oberen Viertel. Dass Länder wie die USA, Katar oder Luxemburg diese Liste anführen rechtfertig uns nicht „nicht zu Handeln". Längst ist klar, dass die Klimaveränderung, die Gletscherschmelze, die Verschmutzungen der Umwelt, das Artensterben... keine Laune in der Natur sind, sondern von uns Menschen und von unserem augenblicklichen Lebensstil, gemacht wird. Anstatt viel zu Reden und mit dem Finger auf andere zu zeigen müssen wir jetzt gemeinsam handeln. Denn für eine verlorengegangene Erde haben wir keinen Ersatz. Das Projekt „Power of Diversity“ will nicht nur zeigen, dass man heute CO2-neutral und Ressourcen autark leben und reisen kann. „Power of Diversity“ schafft auch Bewusstsein für die Ressource Wasser und das Ökosystem Ozean. Auf unseren Touren in die europäischen Häfen schauen wir uns mit den Schülern vor Ort an was Meer ist, was alles dort lebt, wie wichtig Wasser für uns Menschen, Tiere, Natur, aber auch für unsere Ernährung und Wirtschaft ist und wie alles miteinander zusammenhängt. Wir reden und überlegen was wir wie tun können, alleine und alle zusammen. Wir teilen das erfahrene Wissen, damit allen klar wird wie es um uns steht und wie ernst es uns Kindern um unsere Zukunft ist. „Power of Diversity“ ist eine Initiative vieler Menschen, die zeigen, dass es CO2-neutrales Leben möglich ist. Das Projekt finanziert sich ausschliesslich durch private Spenden. Auch du kannst mit dem Erwerb einer Spendenaktie Teil von „Power of Diversity“ werden und damit zeigen, dass dir ein sensibler Umgang mit den Ressourcen wichtig ist. Jeder Euro hilft uns bei der Öffentlichkeitsarbeit und um den Yacht-Bau zu finanzieren. Infos zum “Power of Diversity”-Projekt findest Du unter: www.power-of-diversity.net Kontakt Pasquaia Projektmanagement Michael Mattenklodt michael.mattenklodt@pasquaia.de Mobil: +49 171 3305841 Kahlhorststraße 36a 23562 Lübeck https://www.ecopressblog.de/4-mai-2023-ist-erdueberlastungstag-in-deutschland/?feed_id=492&_unique_id=645375b34d0d5

[mbari-blog]

A closer look reveals new discoveries. 🧐

During an expedition to Mexico’s Gulf of California in 2015, MBARI’s remotely operated vehicle Doc Ricketts encountered a mother squid cradling a cluster of eggs. This sighting was striking because the eggs were twice as large as those of other deep-sea squids we’ve seen brooding their eggs. 

Researchers from MBARI, GEOMAR’s Helmholtz Centre for Ocean Research Kiel, and the University of South Florida have learned this individual likely represents an unknown species of the family of Gonatidae and one that broods giant eggs.

The deep sea is the largest living space on Earth, but an environment we still know very little about. Every new discovery we make is a new piece of the puzzle. Learn more about this dazzling denizen of the deep on our website.

[gabriellademonaco]

Queen Mary’s Engagements in Oct 2024:

01/10: Opening of Parliament

02/10: Official Visit to Brazil - Boat Trip on the Amazon, Adolpho Ducke Forest Reserve and the Amazonian Museum MUSA

02/10: Official Visit to Brazil - Official Reception by the Governor of Amazonas

03/10: Official Visit to Brazil - National Research Institute for the Amazon Forest, Center for Bioeconomy, Lunch

04/10: Official Visit to Brazil - Official Meeting with President of Brazil

04/10: Official Visit to Brazil - Public School, Agricultural Research Institute

04/10: Official Visit to Brazil - Working Dinner with UNFPA at Danish Embassy

05/10: Official Visit to Brazil - Botanical Garden with UNEP

08/10: State Visit from Iceland - Day 1

08/10: State Visit from Iceland - Banquet

09/10: State Visit from Iceland - Day 2

09/10: State Visit from Iceland - Return Event

10/10: State Visit from Iceland - Official Farewell

10/10: Christmas Seal

10/10: 25th Anniversary of the American Chamber of Commerce in Denmark

11/10: 750th Anniversary of Holstebro City

21/10: Official Visit to Germany - Official Welcome at Schloss Bellevue, Reception at the Bundestag

21/10: Official Visit to Germany - Nordic Embassy Complex 25th Anniversary

21/10: Official Visit to Germany - Official Dinner

22/10: Official Visit to Germany - Official Welcome in Schleswig-Holstein, Sailing Tour, Energy Conference at GEOMAR, Danevirke, Flensborghus

[mugiwara-lucy]

Even MORE motivation for tomorrow. Remember EVERY innocent person TRAFFICKED to that El Salvadoran TORTURE prison by LIES from Shitbreak Trump, his creepy as VP and fake ass Christian of the house Mike Johnson along with the MAGA Barbie CUNT Karoline Leavitt:

Agelviz Sanguino, Widmer Josneyder

Aguilar Rodriguez, Nolberto Rafael

Aguilera Aguero, Gustavo Adolfo

Albornoz-Quintero, Henrry

Alvarado Borges, Neri

Angulo-Aparicio, Jinder

Aray-Cardona, Jose

Arregoces Rincon, Jose

Azuaje Perez, Nixon Jose

Barreto Villegas, Rolando

Bastidas Venegas, Jose

Basulto-Salinas, Marcos

Batista-Arias, Elvis

Belloso Fuenmayor, Alirio

Benavides Rivas, Yornel Santiago

Blanco-Bonilla, Andry

Blanco-Marin, Angel

Bolivar Cruz, Angel

Bracho Gomez, Victor

Brazon-Lezama, Javiar

Briceno-Gonzalez, Jose

Briceno-Gonzalez, Jean

Bustamante-Dominguez, Robert

Cabrera-Rico, David

Canizalez Arteaga, Carlos

Caraballo Tiapa, Franco

Cardenas-Silva, Johan

Carmona Bastista, Yorbi

Carmona Hernandez, Jose

Cedeno Contreras, Bruce Embelgert

Cedeno-Gil, Andrys

Chacin Gomez, Jhon

Chirinos Romero, Wild

Chivico Medina, Carlos

Colina Arguelles, Rosme

Colina Caseres, Miguel

Colina-Suarez, Alejandro

Colmenares Solorzano, Leonardo Jose

Colmenarez Abreu, Aldo

Contreras-Gonzalez, Yordano

Cornejo Pulgar, Frizgeralth De Jesus

Corrales-Moreno, Emilio

Davila Fernanadez, Luis

Delgado Pina, Aldrin

Depablos Requena, Jheison

Diaz-Lugo, Kleiver

Duarte Rodriguez, Richard

Duran Perez, Joseph Gregory

Echavez-Paz, Leonel

Elista-Jimenez, Robert

Escalona Carrizo, Yender

Escalona Sevilla, Angelo

Escobar Blanco, Pedro

Escobar Falcon, Yolfran

Fernandez Sanchez, Julio Rafael

Fernandez, Yohan

Fernandez-Subero, Mikael

Flores Jimenez, Wilken Rafael

Flores Rodriguez, Jose

Flores-Lopez, Jose

Fonseca Daboin, Cristhofer

Fuenmayor-Crespo, Roneil

Garcia Casique, Francisco

Garcia Abrego, Kilmar

Garcia Prado, Leonardo

Giron Maurera, Richard

Gonzalez Troconis, Julio

Gonzalez Frailan, Jose Leon

Gonzalez Fuenmayor, Angel Jesus

Gonzalez Pineda, Oscar

Gonzalez-Rodriguez, Charlie

Graterol-Farias, Winder

Gualdron Gualdron, Luis

Gualtero Quiroz, Deibin

Guerrero Padron, Keivy

Guevara Munoz, Wilvenson

Guiterrez-Sierra, Wilker

Gutierrez Flores, Merwil

Hernandez Carache, Yeison

Hernandez Carache, Darwin Gerardo

Hernandez Herrera, Edwuar Jose

Hernandez-Hernandez, Jhonnael

Hernandez Gonzalez, Manuel

Hernandez Hernandez, Angel

Hernandez Juarez, Yorby

Hernandez Romero, Andry

Hueck Escobar, Jesus

Hung Mendoza, Jordan

Hurtado Quevedo, Eddie Adolfo

Indriago-Alvarez, Donovan

Izaguirre-Granado, Randy

Jaimes-Rincon, Yeison

Jerez-Hernandez, Yohendry

Justo Garcia, Jose

Laya-Freites, Jefferson

Leal-Bautista, Keiber

Leal-Estrada, Kervin

Lemus Cagua, Diego

Lizcano-Basto, Josue

Lopez Bolivar, Jose

Lopez Lizano, Maikol

Lopez-Rodriguez, Geomar

Lozada Sanchez, Wuilliam

Lozano-Camargo, Daniel

Lugo Zavala, Johendry

Lugo-Acosta, Yermain

Machado Martinez, Onaiker

Machado-Rodriguez, Jose

Manrique, Edson

Manzo Lovera, Lainerke

Marcano Silva, Luis

Marea-Medina, Ronald

Marin Zambrano, Jhonervi Josue

Marquez Pena, Jose

Marrufo Hernandez, Uriel David

Martinez Vargas, Kerbin

Martinez Vegas, Rafael

Martinez-Borrego, Tito

Martinez-Gonzalez, Yohangel

Mata Fornerino, Wilfredo Jose

Mata-Ribeiro, Yoswaldo

Mathie Zavala, Hotsman Ricardo

Medina-Martinez, Alexis

Melendez Rojas, Edwin

Mendez Boyer, Alex

Mendez Mejias, Angel

Mendez-Gomez, Luis

Mendoz Nunez, Carlos

Mendoza Ortiz, Maikol Solier

Mendoza Pina, Jean Claude

Mendoza Ramirez, Jonathan

Mogollon Herrera, Henry

Molina-Acevedo, Roger

Montero Espinoza, Ervinson

Montilla-Rivas, Jose

Mora-Balzan, Jose

Morales-Rolon, Andres

Moreno-Camacho, Cristopher

Moreno-Ramirez, Maikel

Morillo-Pina, Luis

Moron Cabrera, Yuber

Munoz Pinto, Luis

Navas Vizcaya, Ali

Navas-Diaz, Obed

Nieto Contreras, Kevin

Nunez-Falcon, Luis

Olivera Rojas, Maikel

Orta-Campos, Junior

Ortega Garcia, Felix

Otero Valestrines, Luis

Palacios-Rebolledo, Leoner

Palencia-Benavides, Brayan

Parra Urbina, Eduard

Paz-Gonzalez, Daniel

Pena Mendez, Jose Antonio

Penaloza Chirinos, Ysqueibel Yonaiquer

Perez Perez, Cristian

Perez-Llovera, Juan

Perfecto La Rosa, Moises

Perozo-Colina, Carlos

Perozo-Palencia, Andy

Petit Findlay, Andersson Steven

Petterson Torres, Christean

Pineda Lezama, Jesus

Pinto Velasquez, Cristhian

Plaza-Carmona, Jonathan

Primoschitz Gonzalez, Albert

Querales Martinez, Anderson Jose

Quintero Chacon, Edicson

Ramirez Ramirez, Jonathan Miguel

Ramos Bastidas, Jose

Ramos Ramos, Juan Jose

Reyes Barrios, Jerce Egbunik

Reyes Mota, Frengel

Reyes Ollarvides, Ronald

Reyes-Villegas, Arlinzon

Rincon Bohorquez, Omar

Rincon-Rincon, Ringo

Rios Andrade, Jesus

Rivera Gonzalez, Luis

Rivero-Coroy, Jean

Rodriguez, Edwin

Rodriguez Goyo, Alejandro

Rodriguez Lugo, Luis Gustavo

Rodriguez Parra, Alber

Rodriguez Rojas, Kenlyn

Rodriguez-Da Silva, Fernando

Rojas, Deibys

Rojas-Mendoza, Miguel

Romero Chirinos, Ildemar Jesus

Romero Rivas, Erick

Roos Ortega, Jesus

Rosal-Gelvez, Hector

Rubio-Petrola, Jose

Saavedra-Caruci, Robinson

Salazar-Cuervo, Pedro Luis

Sanchez Bigott, Yorbis

Sanchez Paredes, Idenis

Sanchez-Arteaga, Fernando

Sanchez-Bermudez, Marco

Santiago Ascanio, Ronald

Sarabia Gonzalez, Anyelo

Semeco Revilla, Darwin Xavier

Sierra Cano, Anyelo

Silva Casares, Jason Alfredo

Silva Freites, Carlos Julio

Silva-Ramirez, Aaron

Soto Manzana, Omar

Suarez-Fuentes, Joen

Suarez-Nunez, Luis

Suarez-Salas, Nery

Suarez-Trejo, Arturo

Tapia Colina, Jesus

Teran Aguilar, Carlos

Testa Leon, Orlando Jesus

Toro Noguera, Yonel

Torrealba Torrealba, Yonathan

Torres Archila, Amber

Torres Herrera, Euder Jose

Torres-Polanco, Carlos

Tortosa Guedez, Jorge

Tovar-Marcano, Cesar

Travieso Gonzalez, Kleiver

Troconis Gonzalez, Yhon Deivis

Uzcategui Vielma, Carlos

Vaamondes Barrios, Miguel

Vargas Lugo, Henry

Vazquez Morillo, Nicola

Vega Sandia, Wilmer

Vera Villamizar, Wladimir

Villa-Montano, Enson

Villafranca Rincones, Carlos Eduardo

Villegas-Frites, Ilels

Yamarte-Fernandez, Mervin

Yanez-Arangure, Luis

Zabaleta-Morillo, Keiber

Zambrano Perez, Julio

Zambrano Torrealba, Gabriel

Zarraga Rosales, Jorge

These are people we MUST fight for too. They are leaving INNOCENT FAMILY AND CHILDREN BEHIND.

[rjzimmerman]

Illustration of natural and anthropogenic sources, sinks and transport pathways of trace substances in coastal ecosystems that may interact with climate impacts. Red arrows indicate expected directions of change due to climate change. Zitoun et al. 2024

Excerpt from this story from EcoWatch:

A new study is warning that trace metals like lead, arsenic and mercury that are present in ocean water can become more toxic over time as factors like ocean warming and acidity can increase the bioavailability of these trace elements.

Although these elements can naturally occur in coastal areas, their concentrations have increased due to human activities like agriculture and industrial manufacturing. Now, scientists warn that problems such as ocean acidification and warming are further strengthening the toxicity and spread of trace elements, both from natural and human sources.

“Human activities have increased the global flow of toxic metals such as lead by tenfold and mercury by three to seven times compared to pre-industrial levels,” Sylvia Sander, professor of marine mineral resources at GEOMAR, said in a statement. “Toxic elements like silver are increasingly detectable in coastal waters, originating from coal combustion and the growing use of silver nanoparticles in antibacterial products.” 

The researchers found that the effects of rising sea levels, ocean warming, melting sea ice, drying river beds and ocean acidification could all play roles in the transport and accumulation of trace elements, particularly those that occur naturally. The researchers published their findings in the journal Communications Earth & Environment.

But trace elements from human sources are also contaminating the environment, with heavy metals coming into the oceans from fossil fuel and industry activities. Further, shipping and plastics can also introduce more trace elements into the oceans, especially because plastics can bind certain metals, including lead and copper.

As ocean temperatures rise, the bioavailability of trace elements increases, meaning it becomes easier for marine life to absorb the trace elements, the researchers explained. Trace elements, especially copper, also experience an increase in bioavailability and solubility in the presence of more acidic water. Copper can become extremely toxic to marine life in higher concentrations. 

In a recent report on planetary vital signs, a team of international scientists confirmed that ocean warming and acidification had reached record extremes in recent years.

[mariacallous]

This story originally appeared in Hakai Magazine and is part of the Climate Desk collaboration.

In the Fram Strait off Greenland’s west coast, Véronique Merten encountered the foot soldiers of an invasion.

Merten was studying the region’s biodiversity using environmental DNA, a method that allows scientists to figure out which species are living nearby by sampling the tiny pieces of genetic material they shed, like scales, skin, and poop. And here, in a stretch of the Arctic Ocean 400 kilometers north of where they’d ever been seen before: capelin.

And they were everywhere.

The small baitfish found in the northern Atlantic and Pacific Oceans is an ardent colonizer. Whenever the ocean conditions change, it’s really easy for capelin to expand their range, says Merten, a marine ecologist at the GEOMAR Helmholtz Centre for Ocean Research Kiel in Germany.

It is difficult to estimate an animal’s abundance based solely on the amount of its DNA in the water. Yet in Merten’s samples, capelin was the most frequently encountered species—far more than typical Arctic fish like Greenland halibut and Arctic skate. To Merten, the evidence of so many capelin so far north is a bold sign of a worrying Arctic phenomenon: Atlantification.

The Arctic Ocean is warming quickly—the Fram Strait is nearly 2 °C warmer than it was in 1900. But Atlantification is about more than rising temperatures: it’s a process that is reshaping the physical and chemical conditions of the Arctic Ocean.

Because of the oceans’ global circulation patterns, water routinely flows from the Atlantic into the Arctic. This exchange mostly occurs in deeper water, with currents carrying warm and relatively salty Atlantic water north. This warm Atlantic water, however, doesn’t mix well with the Arctic’s surface water, which is relatively cool and fresh. Fresher water is less dense than saltier water, so the Arctic water tends to float on top, trapping the saltier Atlantic water deep below the ocean’s surface.

As sea ice disappears, however, the surface of the Arctic Ocean is heating up. The barrier between the layers is degrading and Atlantic water is mixing more easily into the upper layer. This is kicking off a feedback loop, where warmer surface water melts more sea ice, further exposing the ocean’s surface to sunlight, which heats the water, melts the ice, and allows Atlantic and Arctic water to blend even more. That’s Atlantification: the transformation of the Arctic Ocean from colder, fresher, and ice-capped to warmer, saltier, and increasingly ice-free.

Merten’s discovery of abundant capelin in the Fram Strait—as well as the DNA she found from other Atlantic species, like tuna and cock-eyed squid, far outside their typical range—is further proof of just how quickly Atlantification is playing out. And its consequences could be enormous.

In the Barents Sea off Russia, for example, a long-term study presents a grim picture of how Atlantification can disrupt Arctic ecosystems. As the Barents Sea has grown warmer and saltier, Atlantic species have been “moving in and taking over,” says Maria Fossheim, a fisheries ecologist with the Institute of Marine Research in Norway who led that study.

Fish communities in the Barents Sea, Fossheim says, have shifted north 160 kilometers in just nine years—“three or four times the pace that [previous studies] had foreseen.” By the end of her study, in 2012, Fossheim found that Atlantic species had expanded throughout the Barents Sea, while Arctic species were mostly pushed out.

Merten’s findings suggest the Fram Strait may be heading in a similar direction. Because this study is the first to examine the diversity of fish in the Fram Strait, however, it is unclear how recent these changes really are. “We need these baselines,” Merten says. “It could be that [capelin] already occurred there years ago, but no one ever checked.”

Either way, they’re there now. The question is: what will show up next?

[yo-sostenible]

Esta tecnología, basada en la naturaleza, permite incrementar la extracción del dióxido de carbono atmosférico y su almacenamiento en el océano. Un nuevo estudio analiza su impacto en la seguridad de los ecosistemas marinos.  El estudio aborda la posibilidad de incrementar la alcalinidad del océano. / Michael Sswat Por Eva Rodríguez El océano almacena y absorbe una cuarta parte de las emisiones de CO2 generadas por la actividad humana que calientan el planeta. Sin embargo, a pesar de la función del mar para mitigar los efectos de la crisis climática actual, su capacidad de almacenamiento es limitado. Numerosos informes e investigaciones apuntan a que el descenso en la captación de CO2 por parte del océano puede ocurrir a medida que el calentamiento global es más pronunciado. Un nuevo estudio, publicado en la revista Science Advances, liderado por el científico español Nicolás Sánchez, biólogo marino del grupo de investigación del profesor Ulf Riebesell en el Centro Helmholtz de Investigación Oceánica (GEOMAR), en Alemania, aborda la posibilidad de incrementar la alcalinidad del océano. Esta tecnología se basa en procesos naturales para el almacenamiento y extracción del dióxido de carbono, pero sus repercusiones en ecosistemas marino se desconocen. “La alcalinización persigue acelerar y ampliar el sumidero de carbono de los océanos mediante el uso de ciertos minerales, cómo los carbonatos y los silicatos”, explica a SINC Sánchez. De esta forma, la alcalinidad del agua de mar aumenta, se desplaza el equilibrio del carbono hacia los bicarbonatos y los carbonatos, lo que provoca que exista más espacio para que el CO2 sea absorbido sin acidificar aún más los océanos. “Se sabe muy poco sobre las consecuencias que estas perturbaciones a la química del agua podrían tener en la vida marina”, apunta el biólogo marino. Reducir emisiones, también las históricas En sus informes más recientes, el Grupo Intergubernamental de Expertos sobre el Cambio Climático, IPCC, indica que para mitigar con éxito el cambio climático, manteniendo el aumento de la temperatura media por debajo de 2° C (preferiblemente 1,5° C), no solo es necesario reducir drásticamente nuestras emisiones de CO2, sino también eliminar de forma activa y permanente una fracción de nuestras emisiones históricas. “El cambio climático, o el conjunto de consecuencias derivadas de la emisión humana de gases de efecto invernadero bien podría ser el mayor reto al que nos enfrentamos en la actualidad. El CO2 es uno de dichos gases que atrapan el calor, y sus niveles han aumentado casi un 50 % desde la revolución industrial”, asevera el científico. En este contexto, varios grupos científicos han experimentado con múltiples técnicas para eliminar el CO2 del aire, denominadas tecnologías para la eliminación del dióxido de carbono (CDR, por sus siglas en inglés). “Algunas técnicas CDR son puramente tecnológicas, mientras que otras utilizan la naturaleza como aliada. Entre éstas últimas se encuentra el aumento de la alcalinidad oceánica (OAE, por sus siglas en inglés) que se inspira en el proceso natural de meteorización de las rocas, responsable de equilibrar el ciclo del carbono, aunque a escalas de tiempo muy lentas”, apunta Sánchez. De hecho, este es el proceso responsable de que los océanos ya hayan absorbido de forma natural entre una cuarta y una tercera parte de nuestras emisiones de carbono. Experimento llevado a cabo en Canarias. / Ulf Riebesell Pruebas en Gran Canaria El equipo científico evaluó los impactos ambientales de una alcalinización equilibrada, una aplicación en la que el agua alcalinizada ya ha absorbido el CO2 necesario para su objetivo de eliminación de dióxido de carbono antes de ser liberada al medio ambiente. “En comparación con otras aplicaciones de OAE, el enfoque equilibrado es moderado en cuanto a sus impactos en la química del agua”, asegura el experto. Los investigadores llevaron a cabo un experimento en Gran Canaria, e...

[greenfue]

الصيد المكثف في قاع البحر يزيد من إطلاق الكربون.. مطالبات علمية بإنهاء صيد الأسماك بالشباك الجرافة في المناطق المحمية

يتم اصطياد الأسماك المفلطحة والروبيان في بحر الشمال باستخدام شباك الجر التي يتم جرها عبر قاع البحر، يؤدي هذا إلى إطلاق الكربون في الماء وثاني أكسيد الكربون (CO 2 ) في الغلاف الجوي، كما أظهرت أحدث الأبحاث في مركز هيلمهولتز هيريون. الدراسة هي جزء من ال��شروع التعاوني APOC. الشركاء هم معهد ألفريد فيجنر ومركز هيلمهولتز لأبحاث القطب الشمالي والبحرية (AWI)، ومركز GEOMAR هيلمهولتز لأبحاث المحيطات في كيل،…

[gaetaniu]

Una trivellazione scientifica svela il mistero storico dell'arcipelago vulcanico di Santorini

Un team internazionale di scienziati guidati dal Dr. Steffen Kutterolf del GEOMAR Helmholtz Center for Ocean Research di Kiel ha trovato per la prima volta le prove di un’eruzione sottomarina storica del vulcano Kameni a Santorini. Nel loro lavoro, pubblicato oggi sulla rivista Nature Geoscience, descrivono depositi di pomice e cenere appena scoperti che supportano le testimonianze storiche di…

[tastydregs]

The Atlantification of the Arctic Ocean Is Underway

This story originally appeared in Hakai Magazine and is part of the Climate Desk collaboration.

In the Fram Strait off Greenland’s west coast, Véronique Merten encountered the foot soldiers of an invasion.

Merten was studying the region’s biodiversity using environmental DNA, a method that allows scientists to figure out which species are living nearby by sampling the tiny pieces of genetic material they shed, like scales, skin, and poop. And here, in a stretch of the Arctic Ocean 400 kilometers north of where they’d ever been seen before: capelin.

And they were everywhere.

The small baitfish found in the northern Atlantic and Pacific Oceans is an ardent colonizer. Whenever the ocean conditions change, it’s really easy for capelin to expand their range, says Merten, a marine ecologist at the GEOMAR Helmholtz Centre for Ocean Research Kiel in Germany.

It is difficult to estimate an animal’s abundance based solely on the amount of its DNA in the water. Yet in Merten’s samples, capelin was the most frequently encountered species—far more than typical Arctic fish like Greenland halibut and Arctic skate. To Merten, the evidence of so many capelin so far north is a bold sign of a worrying Arctic phenomenon: Atlantification.

The Arctic Ocean is warming quickly—the Fram Strait is nearly 2 °C warmer than it was in 1900. But Atlantification is about more than rising temperatures: it’s a process that is reshaping the physical and chemical conditions of the Arctic Ocean.

Because of the oceans’ global circulation patterns, water routinely flows from the Atlantic into the Arctic. This exchange mostly occurs in deeper water, with currents carrying warm and relatively salty Atlantic water north. This warm Atlantic water, however, doesn’t mix well with the Arctic’s surface water, which is relatively cool and fresh. Fresher water is less dense than saltier water, so the Arctic water tends to float on top, trapping the saltier Atlantic water deep below the ocean’s surface.

As sea ice disappears, however, the surface of the Arctic Ocean is heating up. The barrier between the layers is degrading and Atlantic water is mixing more easily into the upper layer. This is kicking off a feedback loop, where warmer surface water melts more sea ice, further exposing the ocean’s surface to sunlight, which heats the water, melts the ice, and allows Atlantic and Arctic water to blend even more. That’s Atlantification: the transformation of the Arctic Ocean from colder, fresher, and ice-capped to warmer, saltier, and increasingly ice-free.

Merten’s discovery of abundant capelin in the Fram Strait—as well as the DNA she found from other Atlantic species, like tuna and cock-eyed squid, far outside their typical range—is further proof of just how quickly Atlantification is playing out. And its consequences could be enormous.

In the Barents Sea off Russia, for example, a long-term study presents a grim picture of how Atlantification can disrupt Arctic ecosystems. As the Barents Sea has grown warmer and saltier, Atlantic species have been “moving in and taking over,” says Maria Fossheim, a fisheries ecologist with the Institute of Marine Research in Norway who led that study.

Fish communities in the Barents Sea, Fossheim says, have shifted north 160 kilometers in just nine years—“three or four times the pace that [previous studies] had foreseen.” By the end of her study, in 2012, Fossheim found that Atlantic species had expanded throughout the Barents Sea, while Arctic species were mostly pushed out.

Merten’s findings suggest the Fram Strait may be heading in a similar direction. Because this study is the first to examine the diversity of fish in the Fram Strait, however, it is unclear how recent these changes really are. “We need these baselines,” Merten says. “It could be that [capelin] already occurred there years ago, but no one ever checked.”

Either way, they’re there now. The question is: what will show up next?

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⭐ECOSISTEMAS TECNOLÓGICOS PARA LA GESTIÓN. Dr. Geomar Molina B. https://youtu.be/N7lEeIAf21M